CHAPTER 11
Problem diagnosis of controller SY-C10
When the fault code is displayed on the display screen of the controller, it indicates the electric wheelchair is in
abnormal condition. The meaning of the display and the recommended disposal method are shown in the table below.
Fault
Code
Flashing
State
Alarm Sound
Fault & Warning Definition
Disposal Method
C1
Long flicker
Long time alarm
Communication failure
Check if the wiring harness is
correctly installed and connected.
C2
Long flicker
Long time alarm
Joystick is not at the initial position
Turn off the power, release the
joystick back to the center
position, and then turn on.
C3
Long flicker
Long time alarm
Conflict of control
(If your wheelchair with front and
rear controllers)
Turn off the power of the front
and rear controllers, and select
one to turn on.
C4
Long flicker
Long time alarm
Brake handle not switched to electric
state
Check if the motor is switched to
drive state.
C5
Long flicker
Long time alarm
Overload warning (The first stage)
Reduce the wheelchair load or
the joystick is released to the
center position, it is restored.
C5
Short flicker
Short time alarm Overload warning (The second stage)
C5
Long flicker
Long time alarm
Overload warning (The third stage)
C6
Long flicker
Long time alarm
Power on failure
Restart.
C7
Long flicker
Long time alarm
Left and right wheel overvoltage
warning
The joystick returns to the center
position until the over-voltage
warning is eliminated.
C8
Long flicker
Long time alarm
Left and right wheel under voltage
warning
Please charge the battery in time.
CE
Long flicker
Long time alarm
System parameter fault
Restart or contact after sales
service.
L1
Long flicker
Long time alarm
Left wheel over current fault
L2
Long flicker
Long time alarm
Excessive deviation of left wheel
current
L3
Long flicker
Long time alarm
Left wheel circuit overheat warning
Turn off the power, restart after
the driving wheel is cooling.
L6
Long flicker
Long time alarm
Left wheel encoder failure
Restart or contact after sales
service.
L7
Long flicker
Long time alarm
Left wheel brake failure
L8
Long flicker
Long time alarm
Phase failure of left wheel
R1
Long flicker
Long time alarm
Right wheel over current fault
R2
Long flicker
Long time alarm
Excessive deviation of right wheel
current
R3
Long flicker
Long time alarm
Right wheel circuit overheat warning
Turn off the power, restart after
the driving wheel is cooling.
R6
Long flicker
Long time alarm
Right wheel encoder failure
Restart or contact after sales
service.
R7
Long flicker
Long time alarm
Right wheel brake failure
R8
Long flicker
Long time alarm
Phase failure of right wheel
If above problems cannot be solved, please do not disassemble the wheelchair parts by yourself.
Please contact the after-sales service in time.
